Just got a phantom 1. First it has an extra cable leading down to the landing gear that doesn't seem to have a place to plug in. Anyone know what this is for? On the other side, the landing gear has a place to plug in the five hole cable. I do all the procedures before take off, but no matter how firmly I push the throttle forward, the phantom never takes off, it just flips over violently. This has already resulted in 2 broken prop guards and scraped propellers. I thought I might have the propellers on wrong. Two of the propellers have black tops and two have silver tops. The black topped ones only screw on opposite each other and the silver topped ones only screw on opposite each other. They can't be interchanged so I figured this was some kind of fool proof system DJI devised. So why won't the phantom lift off rather than flipping over?